A fragrance dispenser unit has a piezoelectric discharge nozzle and a disposable snap-in air freshener containing aromatic liquid. The dispenser unit incorporates a battery power source and a piezoelectric driver circuit on a printed circuit board. The dispenser unit The cartridge includes a housing and an induction-sealed fragrance bottle that snaps into a socket at the bottom of the housing when the cartridge is to be activated. A membrane seal on the mouth of the bottle is pierced by a knife in the housing as the bottle is snapped into place. Liquid fragrance is directed to a micro-perforated vibratory plate in the piezoelectric nozzle by an airtight path that includes: first, a horizontal channel； second, a vertical wick； and, finally, a horizontal wick.
